7th Grade Balancing Equations Flashcard

Front

What is a reactant in a chemical equation?

Back

A reactant is a substance that undergoes a chemical change in a reaction, found on the left side of a chemical equation.

Front

How many hydrogen atoms are in the formula C6H12O6?

Back

There are 12 hydrogen atoms in the formula C6H12O6.

Front

What does a coefficient in a chemical equation represent?

Back

A coefficient indicates the number of molecules or moles of a substance involved in a reaction.

Front

What is the product in a chemical equation?

Back

A product is a substance that is formed as a result of a chemical reaction, found on the right side of a chemical equation.

Front

How do you determine if a chemical equation is balanced?

Back

A chemical equation is balanced when the number of atoms of each element is the same on both sides of the equation.

Front

What is the subscript in a chemical formula?

Back

A subscript is a number written below and to the right of a chemical symbol that indicates the number of atoms of that element in a molecule.

Front

How many aluminum atoms are in the equation 4Al + 3O2 -> 2Al2O3?

Back

There are 4 aluminum atoms in the equation.

Front

What is the total number of oxygen atoms in 4H2O?

Back

There are 4 oxygen atoms in 4H2O.

Front

What does it mean for a chemical equation to be unbalanced?

Back

An unbalanced chemical equation has a different number of atoms of one or more elements on each side of the equation.

Front

What is the significance of balancing chemical equations?

Back

Balancing chemical equations is important because it follows the law of conservation of mass, ensuring that matter is neither created nor destroyed.